Insulating and sealing composition



uNirEo STATES PATENT OFFICE;

e-EOEeE O. BASSET'I, 0F BLOOMFIELD, NEW JERSEY, ssIeNoEm WESTE ELEorEIc COMPANY, INCORPORATED, on NEW YORK, N. Y., A GORPGRML TION OF NEW YORK.

N 0 Draw ng.

To all whom it may concern:

Be it known that I, GEORGE O. BAssE'r'r, a citizen of the United States, residing at Bloomfield, in the county of Essex and State of New Jersey, have invented certain new and useful Improvements in Insulating and Sealing Compositions, of which the following is a full, clear, concise, and exact description.

This invention relates to insulating and sealing compositions and its object is .to provide a sealing composition which has a high melting point and also possesses good insulation properties.

This invention utilizes the desirable property of hardened resin of having a high melting point and gives the substance the desired degree of plasticity, adhesiveness and viscosity by adding thereto in proper amounts a suitable wax, "oil and an asphaltic substance.

It is well known in the art that a resin like colophony, fossil resin, copal, dammar resin and the like, may have its melting point considerably increased by subjecting the substance to a prolonged distillation. Another method of increasing its melting point is to alternately melt and solidify the substance a number of times. method is to produce a more or less oxidation of the substance. But the preferable and most convenient method is to add to the resin a metallic oxid, or a mixture of metal- 11c oxlds, such as iron, zinc, manganese,

calcium, or other oxids and to melt the mixture until it is intimately mixed. The amount'of metallic oxid to be added will depend on the'character of the resin, being chiefly controlled by. the amount of acid present, but in general, it may be said that the average resin will require from five per cent. to fifteen per cent. of oxid.

A hardened resin by itself doesmot possess all the qualities necessary fora sealing or insulating compound, as it is too brittle to be of much use. In accordance with this invention it has been found, however, that the addition of a bituminous substance, such as the asphaltic material, known as sarco, gives it the desired plasticity. Sarco is a well-known insulating and water-proofing compound which contains approximately 98% bituminous material, the remaining amount comprising sulfur, carbon, and min- Specification of Letters Patent.

Application filed June a, 1917. Serial No.

Still another Patented June 29, 1920.-

melted may be secured by the addition of some wax, as paraffin, beeswax, or the like. Adheslveness, if desired, may be obtained by adding to the mixture 2. small amount of a suitable oil, preferably such an oil as resin oil, ch1na wood oil, linseedoil, and the like, Such a m1xture is very suitable for a filling or sealing compound, since, while it has a h1gh melting point, it still melts below the melting point of solder, and may be readily poured as an easy flowing liquid on'or around a soldered connection without any danger of melting the same. It has also been found that its insulation properties are excellent.

In accordance with the principles set forth above for obtaining suitable physical properties, it, is preferable to use a mixturev composed substantially in'the following pro- These proportions need not be strictly adhered to, as the percentage of each "ingredi ent depends largely on thecharacter of the materials with which it [is mixed. The amount of bituminous material to add will depend chiefly upon its character, and thus for some grades of asphaltum, it is neces-' sary to useas' much as parts of asphal- .tum, while for other grades which have been subjected to prolonged heating, it may be necessary to add only 35' to 4:0parts.

In accordance with. the variations in amounts of asphaltio material used, the

amounts of hardened resin used 'may vary from 20 to 35 parts of the cor.r 1pound.' The amount of wax and oil employed willdepend chiefly. upon what degree" of viscosity and adhesiveness of the melted mixture isdesired. The amounts of wax-andoil used,

may also vary from 15 to 30 parts of the compound. It is evident thatior vth 'se v uses of'this' filling compositionin which a ,particular degree of viscosity and adhesiveness is non-essential, the wax and the oil ma be omitted from theleompound.

- hat is claimed is:

1. An insulating and filling'composition comprising. by weight: about 20 to 35' parts of hardened resin, 40 to' 50 parts of asphaltic material, and 15 to 30 parts of a mixture of a Wax and a vegetable oil.

2. An insulating and filling composition composed, substantially by Weight of:

Hardened resin '30 parts Asphaltic material 45 parts Wax 22parts Vegetable oil 3 parts 3. An insulating and filling-composition composedsubstantially by welght of:

Hardened colop hony- 30 parts 5 Asphaltic material 45 parts Paraffin 22 parts Resin oil 3 parts 4. A plastic composition comprising asprising to 35 parts of hardened resin and 35 to 50 parts of asphaltic material.

7. A" plastic composition of matter com- I prising 20 to. 35 parts of ardened resin and 35 to 50 parts of asphalt 0 material, and 15 tov3O parts of a mixture of a wax and a Ve etable oiL n witness whereof I-hereunto subscribe my name this 4 day of June, A. D. 1917.

GEORGE O. BASSETT 

